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What type of studies can be used to assess the extent to which genes can cause psychopathology?

Twin studies are exceptionally important when studying the effect of genes on behaviour and psychopathology. Twins can be MZ (monozygotic) twins who share 100% of their DNA so they have identical genotype...

Answered by Gemma W. • Psychology tutor

1894 Views

How far had the Soviet Union become a Marxist state by 1941?

There was very little resembling a Marxist State in the Soviet Union in 1941. One might argue that the abolition of classes, the collectivisation of the means of production and the state control of the ec...

Answered by Mauro L. • History tutor

1992 Views

Two beakers contain water at room temperature. One contains 200ml, the other 400ml. If both beakers are heated above identical Bunsen burners, which of the two will take longer to boil?

The equation dQ = mcdT tells us how the temperature of an object changes when heat energy dQ is added. In this case the specific heat capacity c is the same for the contents of both beakers since...

Answered by Keita J. • Physics tutor

6319 Views

A 4 metre long bar rotates freely around a central pivot. 3 forces act upon it: 7N down, 2m to the left of the pivot; 8N up, 1m to the left of the pivot; 4N up, 1m to the right of the pivot. Apply one additional force to place the bar in equilibrium.

Begin by calculating the current force and moment of the bar.Force: 8+4-7=5 (or vice versa)Moment: 72= 14 Nm anticlockwise 81= 8 Nm clockwise 4*1= 4 Nm anticlockwiseSum calculated moments: 14+4-8...

Answered by Michael A. • Physics tutor

1993 Views

A house is bought for £150,000 at the start of 2005. For 3 years it loses 10% of its original value per year. After this time it loses 10% per year. What was its value at the end of 2011/start of 2012?

Original value = 150,000 10% original value =15,000 After 3 years year is 2008, house value = 150,000 - 3*(15,000) = 105,000Until start of 2012 from start of 2008, so 4 years of compound intrest. New v...

Answered by Henry F. • Maths tutor

3005 Views